Piston-valve.



J. B.- KINGAN & H. F. RIPKEN.

PISTON VALVE.

APPLICATION FILED JUNE 3, 1912.

' 1,037,777, 7 Patented Sept. 3,1912.

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M M v BgmmwK ,M 1 2 amass; KINGAN ann'noeo RIIBKEN,.OF mnsaromsnrimasora.

PISTON' -VALVE.

Specification of Letters lt'atent.

PatentedSept'. 3,1912.

Application filed June 3, 1912. -Serial-No. 701,461.

To all whom it may. concern: 7

Be it known that-we, JAMES'B. 'KINGAN and HUGO F. RIB-KEN, citizens of the United States, residing at Minneapolis, in the county of Hennepin and State ofzMinnesot-a, have invented certain new. and useful Improvements Piston-Valves and 'we do hereby declare the following to bera full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and .use the same, reference being had to theaacoompanying drawings, and to the letters and figures of reference marked thereon, whichform a part of this specification.

'This invention relates to new and useful improvements in piston slide valves adapted for use for admitting and releasing steam or-other liquid under pressure to and from cylinders of engines, pumps, etc.

More specifically the present invention comprises bushings in which the valve is adapted to reciprocate and provided-with supplementary ports adapted to "register at intervals during the movement of the valve with the supplementary portsiiri the valve and afi'ording means whereby prsure of the fluid may be introduced through the supplementary ports simultaneously with the pressure admitted to the main. ports, thereby admitting a double-supply of fluid pressure to the cylinder at the beginning of each piston stroke.

A further object of the invention consists in the provision of means for introducing a double supply of pressure and retaining the same until the valve has traveled a distance equal to the width of the supplementary port at which time the cylinder having been fully supplied the. supplementary p'orts will be closed until the valve approaches its point of cut-01f, at which time the supplementary ports will reo en and afterwards close simultaneousl preventing a slow 0 osureof-saidport and a consequent dropping away of pressure in the cylinders through straining or wire drawing of pressure from lack of ort openinlg before the point of cut-0 is reache Our invention comprises various details of construction and combinations and arrangements of parts which will be hereinafterfully described, shown in the accompanying drawings and then specifically'defined in the appended claims.

with the main port,

' We 'illustratezour' invention-in the acoompanying drawings, in which- .of the drawings by) letter, A'idesignates a steam chamber within;the casing B. and. into which chamber the fluid pressure. is; introduced. A bushing G is fitted Within one end of the-casing; and has a =.series pf circun iferential ports I) thereimafi'ordingcom- ;munication for the.exhaust from. the c' lin-. der, and a portion of said bushing"w1thin which the piston "reciprocates extends into the steam chamber. a d is :provided'with a series of. auxiliary portal], preferably of smaller dimensions than theports D. :Said

' ports Eare in communicationwith the inte rior of the chamber, while the I orts D are continually. in communication with the space 'F leading to' the cylinder, not shown. ..A

similar bushing, designated by letter Haand provided with circumferential ports H,: is mounted within said casing and hast-he circumference of' the; portion which extends within1 .the steam chamber provided with supplementary. ports vI communicating with the steam chamber.

The piston is made up of a plurality of parts, comprising two concentrically mounted cylinders K and L,-which are spaced apart forming a passageway N whereby the rfluid pressure entering through the :auxiliary ports inone bushing or theother may pass to the cylinder, oneend or the other thereon. The inner of-said cylinders L has-a flaring and L, the circumference of which is provided with-an annular shoulder L adapted to receive the bull ring L the-oi-rcumference of which has=a sliding contact with the inner surface of: the bushing C. Said-.bullzning has in turn an annular shoulder about: its

circumference for the reception of .tthe

' flanged'ning -N.. A-second bull 'ninggdesignated by letter 0,- also has a-bearingabout thecircumference ofthe' :flarin -:end of the cylinder L and is provided waist circumferential ports'O therein. 'Said bull'ring O is providedwith two annularshoulde'rs upon its circumference, designated respectivel by letters 0 and O and a flanged pac 'ng ring Q is adapted; to surround a =p1ontion of the bull 'rin 0 and engage thesboulder O -With the 1111161: and of the flange of said a packing ring Q is provided with two flanges Q and Q and which packing ring surrounds a portion of the bull ring 0, the edge of the flan e Q being flush with the adjacent margina edges of theports 0'. The outer cylinder K, which also has outwardly flaring ends, isprovided with an annular shoul((i)er P about which a port-ion of the bull rm the flange Q, of the gages over the circumference of the flaring end of said cylinder K.

A follower, designatedby letterR, is-pro vided with a series of spider'arms B,. 1 which, at their inner ends, terminate in a disk Rl which is apertured and is adaptedtoreceiv'e one end of the piston stem S u on which a threaded nut S is mounted to old the fol lower in place. Said follower R is adapted to telescope within the bull ring L and a flange R formed about the outer end of said follower I is held in frictional contact with the outer faceof the bull ring L and the outer face and flange of the packing rin N with the outer face of said flange R ush with the edge of said packing ring N. s

A similar arrangement of packing and bull rings is provided-within the bushing H and consists ofthe follower M with radial arms M terminating at their inner ends in an apertured disk M for the reception of the piston rod and about the follower is the bull ring M which is annularly shouldered for the reception of the packing ring M which is flanged and extends about the circumference of the flaring or flanged end of the follower M. A bull ring T, provided with circumferential ports T, is mounted about the adjacent flaring ends of the two cylinders, and flanged packing rings T -and T surround the bull ring T and the adjacent edges of the flanges of said packing rings T and T are flush with the marginal edges of the ports T. v

In operation, steam or other fluid under pressure enters the space intermediate theouter circumference of the cylinder K and the inner surface of the portion of the bushing H which projects within .the pressure chamber and, when'the parts of the apparatus assume the position shown in Fig. 1 of the drawings, the fluid pressure is allowed to pass through the space intermediate'the inner marginal edges of the orts H and the adjacent edge of the pee 'ng ring T and simultaneously a supplementary supply of fiuid under pressure 15 allowed to pass from the pressure chamber through the supplementary ports in the bushing C and into the space intermediate the two packing rings Q, and Q, which, together with the wall of the ports in the bull ring 0, form the walls of ports leading into the space intermediate passes and contacts therewith and by the provision packing ring Q enthe-two cylinders Land K said auxiliary supply of fluid under pressure bein allowed to pass through the ports T in the ull ring T and into the cylinder. By thisprovision, it will be noted that a double supply of fluid under pressure will be admitted simultaneously inder of the engine during the period thatthe port O is in. communication with the pressure chamber. .It will also be noted that, of the construction shown, the packing rings form portions ofthe walls of the ports through which the fluid under pressure is admitted and exhausted, and. are wider than the supplementary ports, the packing gs remaining at all times inside the bushing and thoroughly protected from breakage or harm from any cause.

The packing rings in our improved devic'e may be applied to the valve without the usual necessity of straining or springing of the rings over the body of the valve, which practice tends to distort the original shape of the rings and renderingthem, to a large extent, unfit for the functions wh ch they are adapted to perform.

Whi1e our drawings and specification show a construction of two separate tubes marked K and L respectively, we do not desire to be limited in this construction, as

this portion of the valve body may be made.

integral or in the form of a casting iii-one solid piece.

What we claim to be new is'-:

1. A piston slide valve for engines, etc.,

a casing, bushings mounted comprising with a series of therein and provided each ports adapted to communicate with the cyl-' inder'in the engine, an auxiliary series of ports communicating with a steam chamber, concentrically mounted piston cylinders with longitudinal ducts intermediate the to the passageway leading to the cylsame, a stem fixed to said piston cylinders,

bull rings mounted upon said cylinders and provided with circumferential ports, flanged packing rings mounted upon each bull ring, the edges of said packing rings forming parts of the walls of said ports, the space about the outer cylinder forming a direct passageway for the steam and the space between the cylinder an auxiliary passageway for the steam, as set forth. v

2; A piston slide valve'for engines, etc., comprising a casing, bushings mounted therein and provided each with a series of ports adapted to communicate with the cylinder in the engine, an auxiliary series of ports communicating with a steam chamber, concentrically mounted piston cylinders spaced apart and provided with flaring ends,

portions of the bearing rings forming the marginal edges of the ports leading through the bull ring, and a stem fastened to the cyl-. inder, as set forth.

3. A piston slide valve for engines, etc., comprising a casing, bushings mounted therein and provided each with a series of ports adapted to communicate with the cylinder in the engine, an auxiliary series of ports communicating with a steam chamber, concentrically mounted piston cylinders spaced apart and provided with flaring ends, forming an auxiliary passageway for the fluid pressure intermediate the cylinders, a bull ringsupported about the flaring end of the inner cylinder and supporting the outer cylinder, bearing rings about said bull ring, portions of 'thebearing rings forming the marginal edges of the ports leading through the bull ring, followers for supporting the inner cylinder, and a stem fastened to the followers, as set forth.

4. A piston slide valve for/engines, etc., comprising a casing, bushings mounted therein and provided each with a series of ports adapted to communicate with the cylinder in the engine, an auxiliary series of ports communicating with a steam chamber, concentrically mounted piston cylinders spaced apart and provided with flaring ends, forming an auxiliary passageway for the fluid pressure intermediate the cylinders, a bull ring supported about the flaring end of the inner cylinder and supporting the outer cylinder, bearing rings about said bull ring," port-ions of the bearing rings forming the marginal edges of the ports leading through the bull ring, followers for. supporting the inner cylinder, a bull ring surrounding each follower andrbearing against the end of the inner cylinder, and a stem fastened to said followers, as set forth. I

5.- A piston slide valve for engines, etc., comprising a casing, bushings mounted therein and provided each with a series of ports adapted to communicate with the cylinder in the engine, an auxiliary series of ports communicating with a steam chamber,

concentrically mounted piston cylinders spaced apart and provided with flaringends, forming an auxiliary passageway for the fluid pressure intermed1ate the cylinders, a bullringsupported about the flaring end of the inner cylinder and supporting the outer cylinder, bearing rings about said bull ring, portions of the bearing rings forming the marginal edges of the ports leading through the bull ring, followers for supporting the inner cylinders, .a bull ring surrounding each follower and bearing against the end of the inner cylinder, and a bearing ring'surrounding the outer end of each follower and a portion of the adjacent bull ring, as set forth. v

6. A piston slide valve for engines, etc., comprising a casing, bushings mounted therein and rovided each with a series of ports adapt-es inder in the engine, an auxiliary series of ports communicating with a steam chamber,

concentrically mounted piston cylinders spaced apart and provided with flaring ends, forming an auxiliary passageway for the fluid pressure intermediate the cylinders, a

. bull ring supported about the flaring end of the inner cyllnder and-supporting the outer cylinder, bearing rings about said bull ring,

portions of the bearing rings forming the marginal edges of the ports leading through the bull ring, followers having splder arms terminating at their inner ends in apertured' disks, a stem fitted in said dish, a bull ring surrounding each follower and bearing against a shoulder at the end of said inner cylinder, and a bearing ring mounted about the outer end of each follower and a portion of the bull ring which surrounds the follower, as set forth.

In testimony whereof we hereunto aifix our signatures in the presence of two witnesses.

JAMES B. KINGAN. HUGO F. RIPKEN.

Witnesses:

F. L. PALMER, D. G. CAMPBELL.

to communicate with the cyl- 

